Hexi Corridor

noun1

1. •
   A geographical region of relatively arable terrain in modern western Gansu Province, China, part of the Northern Silk Road running northwest from the bank of the Yellow River; consisting of a string of oases, it was the most important route from North China to the Tarim Basin and Central Asia for traders and the military.

   • Su-pei Mongol Autonomous Hsien is situated in the western portion of the Ho-hsi Corridor of Kansu Province, bordering A-k'o-sai Kazakh Autonomous Hsien... — 1964